rs779336305
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_005633.4(SOS1):c.3778C>G(p.Pro1260Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000958 in 1,461,718 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000096 ( 0 hom. )
Consequence
SOS1
NM_005633.4 missense
NM_005633.4 missense
Scores
5
13
Clinical Significance
Conservation
PhyloP100: 4.33
Genes affected
SOS1 (HGNC:11187): (SOS Ras/Rac guanine nucleotide exchange factor 1) This gene encodes a protein that is a guanine nucleotide exchange factor for RAS proteins, membrane proteins that bind guanine nucleotides and participate in signal transduction pathways. GTP binding activates and GTP hydrolysis inactivates RAS proteins. The product of this gene may regulate RAS proteins by facilitating the exchange of GTP for GDP. Mutations in this gene are associated with gingival fibromatosis 1 and Noonan syndrome type 4. [provided by RefSeq, Jul 2008]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -2 ACMG points.
BP4
?
Computational evidence support a benign effect (MetaRNN=0.1308263).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SOS1 | NM_005633.4 | c.3778C>G | p.Pro1260Ala | missense_variant | 23/23 | ENST00000402219.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SOS1 | ENST00000402219.8 | c.3778C>G | p.Pro1260Ala | missense_variant | 23/23 | 1 | NM_005633.4 | A1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251108Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135690
GnomAD3 exomes
AF:
AC:
1
AN:
251108
Hom.:
AF XY:
AC XY:
0
AN XY:
135690
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 0.00000958 AC: 14AN: 1461718Hom.: 0 Cov.: 32 AF XY: 0.0000151 AC XY: 11AN XY: 727152
GnomAD4 exome
AF:
AC:
14
AN:
1461718
Hom.:
Cov.:
32
AF XY:
AC XY:
11
AN XY:
727152
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
Alfa
AF:
Hom.:
ExAC
?
AF:
AC:
1
EpiCase
AF:
EpiControl
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Noonan syndrome 4 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | - | - - |
Cardiovascular phenotype Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 09, 2021 | The p.P1260A variant (also known as c.3778C>G), located in coding exon 23 of the SOS1 gene, results from a C to G substitution at nucleotide position 3778. The proline at codon 1260 is replaced by alanine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Fibromatosis, gingival, 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | - | - - |
RASopathy Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Mar 27, 2023 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SOS1 protein function. ClinVar contains an entry for this variant (Variation ID: 477723). This variant has not been reported in the literature in individuals affected with SOS1-related conditions. This variant is present in population databases (rs779336305, gnomAD 0.0009%). This sequence change replaces proline, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 1260 of the SOS1 protein (p.Pro1260Ala). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
DEOGEN2
Benign
T;T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
M_CAP
Benign
D
MetaRNN
Benign
T;T;T
MetaSVM
Benign
T
MutationAssessor
Uncertain
M;M;.
MutationTaster
Benign
D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N
REVEL
Uncertain
Sift
Benign
T;T;T
Sift4G
Benign
T;T;T
Polyphen
B;B;.
Vest4
MutPred
Loss of glycosylation at P1260 (P = 8e-04);Loss of glycosylation at P1260 (P = 8e-04);.;
MVP
MPC
ClinPred
T
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at